243420041001 has 4 divisors (see below), whose sum is σ = 324560054672. Its totient is φ = 162280027332.

The previous prime is 243420040979. The next prime is 243420041009. The reversal of 243420041001 is 100140024342.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 243420041001 - 2⁶ = 243420040937 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (243420041009) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40570006831 + ... + 40570006836.

It is an arithmetic number, because the mean of its divisors is an integer number (81140013668).

Almost surely, 2^243420041001 is an apocalyptic number.

It is an amenable number.

243420041001 is a deficient number, since it is larger than the sum of its proper divisors (81140013671).

243420041001 is an equidigital number, since it uses as much as digits as its factorization.

243420041001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81140013670.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 243420041001 its reverse (100140024342), we get a palindrome (343560065343).

The spelling of 243420041001 in words is "two hundred forty-three billion, four hundred twenty million, forty-one thousand, one".